FW: Coil Efficiency (was more mini coils)
From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Wednesday, June 18, 1997 5:46 PM
Subject: Coil Efficiency (was more mini coils)
Hi Greg, all,
> > As we (that have actually gotten our hands dirty and
> > built coils that is, and I'm not saying you haven't) know well, the
> > ratio between input power and output spark length is far from linear.
> > Streamers issuing from a topload terminal seem to crave increasing
> > power at an exponential rate to their length.
> All too true :^< Perhaps a more direct measure of coil effectiveness
> would be to normalize the W/ft ratio to operating power level.
> None the less, Malcolm's 'little wonder coil' does provide an
> interesting data point, in a sparsely populated area of tesla coil
> parameter space. Way to go, Malcolm!
Thank you. Perhaps it's time I brought in what figures I have compiled
on length vs actual coil power.I have about 16 at the mo. Some of the
figures had to be estimated because of the gap systems used so may
be totally out of touch (esp. those achieving multiple fires per 1/2
cycle for static gaps). Seeing those beside claimed wall-plug figures
might be a real wake-up call for some. Will do in the next day or so.